fix: update image tag handling in update-manifest workflow for robust…

.github/workflows/update-manifest.yaml

@@ -45,17 +45,17 @@ jobs:
         run: |
           cd k8s-config
           NEW_IMAGE="ghcr.io/techtorque-2025/${SERVICE_NAME}:${{ steps.info.outputs.branch }}-${{ steps.info.outputs.sha }}"
+          export NEW_IMAGE
 
           echo "🔄 Updating ${DEPLOYMENT_FILE} to use image: ${NEW_IMAGE}"
 
-          # Use yq --arg instead of env() so we don't need to export the variable; this is robust on GH runners
-          yq eval -i --arg new_image "${NEW_IMAGE}" \
-            '(select(.kind == "Deployment") | .spec.template.spec.containers[0].image) = $new_image' \
+          yq eval -i \
+            '(select(.kind == "Deployment") | .spec.template.spec.containers[0].image) = env(NEW_IMAGE)' \
             k8s/services/${DEPLOYMENT_FILE}
-          
+
           echo "✅ Updated manifest:"
           yq eval 'select(.kind == "Deployment") | .spec.template.spec.containers[0].image' k8s/services/${DEPLOYMENT_FILE}
-      
+
       - name: Commit and push changes
         env:
           SERVICE_NAME: "authentication"